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Table 8 Reasons for failure of collars and tags

From: Three decades of wildlife radio telemetry in India: a review

Manufacturers and technology

Number of collars

Collars failed during use (%)

Collars dropped

Antenna broken or collar damaged

Signal stopped

Battery drained

Contact lost or unknown

Advanced Telemetry Systems

VHF

46

6.5

2

-

-

-

1

African Wildlife Tracking

VHF beacon

2

50

-

-

1

-

-

GPS-UHF

2

100

-

-

2

-

-

AVM Instruments

VHF

7

100

-

-

2

5

-

VHF backpack

17

94

-

-

-

13

3

Biotrack

VHF

1

0

-

-

-

-

-

HABIT

VHF

6

100

-

-

-

6

-

GPS-VHF

3

66.6

2

-

-

-

-

GPS-UHF

1

100

-

-

1

-

-

Holohil Ltd

VHF implant

2

100

-

-

-

-

2

Lotek

VHF beacon

1

100

-

-

-

1

-

GPS-Argos

3

100

-

2

1

-

-

Nippon

PTT backpack

5

40

-

-

-

2

-

Sirtrack

PTT backpack

71

90

-

-

-

-

64

Telonics

VHF

96

27

8

1

7

10

-

VHF implant

4

100

-

-

-

4

-

PTT backpack

4

0

-

-

-

-

-

VHF beacon

5

0

-

-

-

-

-

Argos-only

1

100

1

-

-

-

-

GPS-Argos

9

11

1

-

-

-

-

Vectronics

VHF beacon

1

100

-

-

-

1

-

GPS-Argos

1

100

-

-

1

-

-

GPS-Iridium

4

75

-

-

1

2

-

GPS-UHF

2

100

-

-

-

2

-

GPS-GSM

5

80

1

-

3

-

-

Wildlife Computers

PTT backpack

1

100

-

-

-

-

1

Wildlife Materials

VHF

30

26.7

2

1

-

4

1

Total

330

49.1

17

4

19

50

72

  1. GSM, global system for mobile communication; GPS, global positioning system; PTT, platform terminal transmitter; UHF, ultra-high frequency; VHF, very high frequency.
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Animal Biotelemetry

ISSN: 2050-3385